by keeping another magnet or attractive force
Not exactly. All pieces of the magnet retain their ferrous properties, but if they were (for example) dropped, then the shock of the fall could potentially make them lose a bit of magnetism. Extreme temperature changes and high power electric discharges could also decrease the power of the magnet.
heat
No, not the lead
If you put a magnet with the same poles attracted to each other it will repel. Repel- is the opposite of attract Or if you're a Pokémon fan: "The young trainer went to Mt. Moon without any repel and had to fight bunches of Zubat". :p
An electromagnet is a type of magnet in which the magnetic field is produced by the flow of electric current. The magnetic field disappears when the current ceases. Take a look at this Wikipedia page for more information: http://en.wikipedia.org/wiki/Electromagnet
By using magnet at bottom
Idek
You could use compressed air to move an object you are not touching. You could also put an object on a table and lift one edge of the table which would cause the object to move. You could also use more complex means, such as magnets. Of course you could tie a rope around an object and pull it and you’d be moving it without touching it.
By rubbing two magnets together.
What happens if vary/change the distance between the magnet and the nail/s?
Could be a problem inside the steering column
Yes, a magnet would remove the iron filings without attracting the copper salts, copper salts are not magnetic.
The magnet by itself would not kill you. However... If the magnet was sharp or pointy it could cut or perforate your digestive tract, which could kill you. If the magnet was too large to pass through your digestive tract it could cause a fatal obsruction. If the magnet was coated with a toxic substance, that substance could kill you.
The nail contains iron, which is ferromagnetic. Ferromagnets respond to a magnetic field (from a magnet) by generating their own magnetic field, ie, they become a magnet in the presence of a magnet. They also exhibit hysteresis, in that if they are exposed to a strong enough magnetic field, it will lock in and become a permanent magnet.
No, you would not be able to define the celestial poles and equator if the Earth did not rotate. Without rotation, there would be no poles, save for possibly magnetic poles.
Glucose is not a metal and can not be separated using a magnet.
Yes. Rubbing and touching is the worst thing you could do.